MISCELLANEOUS MCQS

1.	Cystinuria results from inability to (A) Metabolise cysteine (B) Convert cystine into cysteine (C) Incorporate cysteine into proteins (D) Reabsorb cystine in renal tubules	D
2.	Ammonia is transported from muscles to liver mainly in the form of (A) Free ammonia (B) Glutamine (C) Asparagine (C) Alanine	D
3.	The plasma concentration of IgA is (A) 1–5 mg/dl (B) 40–200 mg/dl (C) 60–500 mg/dl (D) 700–1,500 mg/dl	C
4.	The most abundant T cells are (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells	B
5.	Helper T cells release all the following except (A) Interleukins (B) Colony stimulating factors (C) Perforins (D) Tumour necrosis factor	C
6.	In hypoparathyroidism (A) Plasma calcium and inorganic phosphorous are low (B) Plasma calcium and inorganic phosphorous are high (C) Plasma calcium is low and inorganic phosphorous high (D) Plasma calcium is high and inorganic phosphorous low	C
7.	SGOT level in a adult is (A) 5–40 units/dl (B) 1–4 units/dl (C) 5–15 units/dl (D) 50–100 units/dl	A
8.	Optical isomers of all aminoacids exist except (A) Glycine (B) Arginine (C) Alanine (D) Hydroxy proline	A
9.	Michaelis – Menten equation is used to explain the effect of substrate concentration on (A) Carbohydrate (B) Enzyme (C) Lipid (D) Protein	B
10.	Buriet test for identification for A) peptide bond B) protein C) Alanine D) none	A
11.	Glyoxylic acid + conc. H2SO4   in Hopkins –Cole test give -------colour A) Red B)  Violet C) white D) yellow	B
12.	Aspartame a sweetening  agent is formed by combination of A) aspartic acid and tyrosine B) aspartic acid and phenylalanine C) tryptophan and glycine D) none	B
13.	Jaundice is visible when serum bilirubin exceeds (A) 0.5 mg/100 ml (B) 0.8 mg/100 ml (C) 1 mg/100 ml (D) 2.4 mg/100 ml	C
14.	Which of the following is not essential fatty acids? (A) Oleic acid (B) Linoleic acid (C) Arachidonic acid (D) Linolenic acid	A
15.	Vitamin B1 coenzyme (TPP) is involved in (A) Oxidative decarboxylation (B) Hydroxylation (C) Transamination (D) Carboxylation	A
16.	Dietary requirement of Vitamin D: (A) 400 I.U. (B) 1000 I.U. (C) 6000 I.U. (D) 700 I.U.	A
17.	Vitamin B12 has a complex ring structure (corrin ring) consisting of four (A) Purine rings (B) Pyrimidine rings (C) Pyrrole rings (D) Pteridine rings	C
18.	Riboflavin is heat stable in (A) Acidic medium (B) Alkaline medium (C) Neutral medium (D) Both (A) and (C)	D
19.	NAD is required as a coenzyme for (A) Malate dehydrogenase (B) Succinate dehydrogenase (C) Glucose-6-phosphate dehydrogenase (D) HMG CoA reductae	A
20.	Deficiency of vitamin B12 can be diagonised by (A) Carr-Price reaction (B) Ames assay (C) Watson-Schwartz test (D) Schilling test	D
21.	Vitamin C enhances the intestinal absorption of (A) Potassium (B) Iodine (C) Iron (D) None of these	C
22.	Vitamin D2 is also said to be (A) Activated ergosterol (B) Fergocalciferol (C) Viosterol (D) All of these	D
23.	A water soluble form of vitamin K is (A) Phylloquinone (B) Farnoquinone (C) Menadione (D) None of these	C
24.	This is photo labile vitamin: (A) Thiamine (B) Riboflavin (C) Niacin (D) Cholecalciferol	B
25.	The Michaelis constant, Km is (A) Numerically equal to ½ Vmax (B) Dependent on the enzyme concentration (C) Independent of pH (D) Numerically equal to the substrate concentration that gives half maximal velocity	D
26.	The normal serum level of thyroxine (T4) is (A) 2.0–4.0 μg/100 ml (B) 5.5–13.5 μg/100 ml (C) 14.0–20.3 μg/100 ml (D) 20.0–25.0 μg/100 ml	B
27.	The chemical name of guanine is (A) 2,4-Dioxy-5-methylpyrimidine (B) 2-Amino-6-oxypurine (C) 2-Oxy-4-aminopyrimidine (D) 2, 4-Dioxypyrimidine	B
28.	The sugar moiety present in DNA is (A) Deoxyribose (B) Ribose (C) Lyxose (D) Ribulose	A
29.	Interferon (A) Is virus specific (B) Is a bacterial product (C) Is a synthetic antiviral agent (D) Requires expression of cellular genes	D
30.	Nitrogen at position 1 of pyrimidine nucleus comes from (A) Glutamine (B) Glutamate (C) Glycine (D) Aspartate	D